I've moved exclusively to my trainer for winter riding and my spin bike is collecting dust. If you're interested in a good non-magnetic spin bike (Impulse PS300) I'd be willing to sell ($300). It's solid and in great condition. DM me if you want to come by and take a look.
Here's a review:
http://www.originfitness.com/knowled...or-cycle-test/
Here's the specs:
http://www.originfitness.com/impulse...l-indoor-cycle